Our Rolling Deploys Were Sending Live Traffic to Pods That Weren’t Ready, Because the Readiness Probe Checked the Wrong Port
By KP | TZoneLabs | DevOps & Cloud Engineering Every rolling deploy for two months sent a burst of 502 errors to a small percentage of users, for about 30 seconds each time. Support tickets blamed “the app being slow sometimes.” The actual cause: our readiness probe was checking a port the container wasn’t listening … Read more